Featured Research

from universities, journals, and other organizations

New maize map to aid plant breeding efforts

Date:
November 20, 2009
Source:
University of California - Davis
Summary:
A massive survey of genetic diversity in maize has produced a gene map that should pave the way to significant improvements in a plant that is a major source of food, fuel, animal feed and fiber around the world.

In a massive survey of genetic diversity in maize, also known as corn, researchers across the United States, have developed a gene map that should pave the way to significant improvements in a plant that is a major source of food, fuel, animal feed and fiber around the world.

Related Articles


The new map, a special type of gene map known as a haplotype map, charts genetic diversity and recombination across the genome of 27 inbred lines of maize. The research team, led by U.S. Department of Agriculture scientists at Cornell University and Cold Spring Harbor Laboratory in New York and including plant scientist Jeffrey Ross-Ibarra of the University of California, Davis, will report its findings in the Nov. 20 issue of the journal Science.

"We are hopeful that the information that this haplotype map reveals about the genetic diversity of maize will provide a foundation for efforts to understand maize evolution and the genetic basis of complex traits that may prove key to maize improvement," Ross-Ibarra said.

Maize (Zea mays L.), with its genome of an estimated 30,000 genes distributed along 10 chromosomes, is about 70 percent the size of the human genome. In constructing the haplotype map, the researchers identified several million genetic variations -- or polymorphisms -- in the DNA sequence among the 27 maize inbred lines, as well as 10-fold to 30-fold variation in the rates at which genes recombine.

"This approach yielded evidence that points to hundreds of regions in the genome that were probably involved in the domestication of maize and-or geographic differentiation among various lines of maize," Ross-Ibarra said."

The research team also included scientists at the University of Missouri, Columbia, and the University of Arizona, Tucson.

Funding for the mapping effort was provided by the National Science Foundation and the U.S. Department of Agriculture.


Story Source:

The above story is based on materials provided by University of California - Davis. Note: Materials may be edited for content and length.


Cite This Page:

University of California - Davis. "New maize map to aid plant breeding efforts." ScienceDaily. ScienceDaily, 20 November 2009. <www.sciencedaily.com/releases/2009/11/091119194130.htm>.
University of California - Davis. (2009, November 20). New maize map to aid plant breeding efforts. ScienceDaily. Retrieved March 31, 2015 from www.sciencedaily.com/releases/2009/11/091119194130.htm
University of California - Davis. "New maize map to aid plant breeding efforts." ScienceDaily. www.sciencedaily.com/releases/2009/11/091119194130.htm (accessed March 31, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Tuesday, March 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Gorilla Falls Into Zoo Moat

Gorilla Falls Into Zoo Moat

Reuters - Light News Video Online (Mar. 31, 2015) A gorilla comes to the rescue of her sister who fell into a moat in Israel&apos;s Safari zoo. Rough cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Giant Amphibian Fossils Found in Portugal

Giant Amphibian Fossils Found in Portugal

Reuters - Light News Video Online (Mar. 31, 2015) Scientists discover a new species of giant amphibian that was one of the largest predators on earth about 220 million year ago. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Rhino Goes on Deadly Rampage in Nepal

Rhino Goes on Deadly Rampage in Nepal

Reuters - News Video Online (Mar. 31, 2015) A rhino runs rampant down a bustling city street, killing one woman and injuring several others, before security personnel chase it back into the forest. Vanessa Johnston reports. Video provided by Reuters
Powered by NewsLook.com
Bionic Ants Could Be Tomorrow's Factory Workers

Bionic Ants Could Be Tomorrow's Factory Workers

Reuters - Innovations Video Online (Mar. 30, 2015) Industrious 3D printed bionic ants working together could toil in the factories of the future, says German technology company Festo. The robotic insects cooperate and coordinate their actions and movements to achieve a common aim. Amy Pollock reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins